<Item type="DFMEA DFMEA Item" action="add" id="@2">
 <source_id>@1</source_id>
 <related_id>
  <Item type="DFMEA Item" action="add" id="@3">
   <fmea_item>@4</fmea_item>
  </Item>
 </related_id>
</Item>